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A transform function to use with copy-webpack-plugin that attempts to gzip assets as they're copied.
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| // A transform function to use with copy-webpack-plugin that | |
| // gzips assets as they're copied. | |
| // | |
| var gziptee = function(src, dest) { | |
| const gzipSmallerThan = 0.8; | |
| function mkdirhier(dir) { | |
| if(path.resolve('.').length < dir.length) { | |
| mkdirhier(path.dirname(dir)); | |
| } | |
| if (!fs.existsSync(dir)) { | |
| fs.appendFileSync('gzipper.log', 'Making ' +dir+ '\n'); | |
| fs.mkdirSync(dir, 0777 & (~process.umask())); | |
| } | |
| } | |
| var gzipper = function(content, _path) { | |
| gzip(content, function(err, result) { | |
| if (err) { | |
| console.error(err); | |
| } | |
| else { | |
| if((result.length / content.length) < gzipSmallerThan) { | |
| var gzpath = path.resolve('.', path.join(dest, path.relative(src, _path)) + '.gz'); | |
| fs.appendFileSync('gzipper.log', _path + ' to ' + gzpath + '\n'); | |
| // The file hasn't been copied yet, so its parent might not exist yet | |
| mkdirhier(path.dirname(gzpath)); | |
| fs.writeFile(gzpath, result); | |
| } | |
| } | |
| }); | |
| return content; | |
| } | |
| return gzipper; | |
| } | |
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| new CopyWebpackPlugin([ | |
| { | |
| from: 'src/assets', | |
| to: 'assets', | |
| transform: gziptee('src/assets', 'dist/assets') | |
| } | |
| ]) |
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